I agree that the trio were bad (Poldi, Boateng & Kroos).
The coach was not consistenent in his selection of 11 players...and some players are not fully ready both mentally & physically after disastreous and disappointing season (for example Schwini).
Also, to add to the weakness when Hummles could not recover mentally after Cassano tunred him to assist in scoring the first goal.
The only players who were better were Khaderia & Ozil ..the rest of the team before 10-15 mintues toward the end were really dead and with no fighting spirit.
There is hope in the young if given chances Reus, Gotze, bender but the coach need to strengthen his defense which Germany could not really bring the same quality as in the 70s.
Germany are mentally haunted by Italy...that was really exploited by the Italian and will still do if we the team does improve on a mental & tactical areas.